Manufacture of incandescent gas-mantles.



STATE T ttltl lr tlll.

ANGELO SIMONINI, 0F ATLANTIC CITY, NEW JERSEY, ASSIGNOR TO \VELSBACHLIGHT COMPANY, A CORPORATION OF NEW JERSEY.

I MANUFACTURE OF INCANDESCENT GAS-MANTLES.

Ito Drawing.

To all whom "it may concern:

Be it known that I, Airc ew Snroxrnr, a subject of the Emperor ofAustria-Hungary, and a resident of Atlantic City, county of Atlantic,State of New Jersey, have invented certain new and useful Improvementsin Manufacture of Incandescent Gas lllantles; and I do hereby declarethe following to be a full, clear, and exact description of theinvention, such will enable others skilled in theart to which itappertains to make and use the same.

The invention relates to certain new and useful improvements in themanufacture of ineandcscing gas mantles, and particularly to themanufacture of such mantles from artificial silk webbing. The resultantproduct possesses physical qualities which particularly adapt it to useas a gas incandescent in a Bunsen flame; as, for instan e, increasedresistance to the explosive action of the gas and air mixture at thetime of ignition, capability of withstanding very consideahle shocks andjars, and even of suffering radical bends or fiexures and-thereafterpermitting it to resume its original form of configuration withoutbreaking. It is, furthermore, characteristic of the product thatitmaintains practically its lighting efficiency and physical propertiesduring long continued use.

In carrying out the invention, the artificial silk Webbing, preferablyof the usual tubular configuration and close mesh familiar to the art,is first subjected to a preliminary washing and purifying treatmentbefore the action of the saturating fluid. To this end, I preferablybleach the webbing and thereafter treat it with a very dilute solutionof hydrochloric acid for the purpose of dissolving out the mineralimpurities, and then after thoroughly washing it with distilled water,neutralize it to remove the last traces of the acid. I then carefullydry the webbing. The purified and dried Webbing is then Subjected to theaction of a saturating solution of lighting fluid made up of thenitrates of thorium and cerium in the usual Specification of LettersPatent.

Patented (lct- 3909- Application filed April 15, 1908. Serial No.427,219.

proportions, familiar to the art. After the saturation the excess ol thelighting fluid is removed, by centritugnlizing. squeezing, or the like,and the webbing is thereu mn dried. The dried webbing is then treatedwith a solution of alkali preferably ammonia for th purpose of fixing inthe fabric the mineral constituents of the lighting llnid in the form ofamorphous insoluble eon'ipounds. The soluble crmstituentsv are thereuponre moved by washing and the webbing is preferably again dried. Asolution is then prepared of amiroximat'ely two parts, by weight, ofammonium pcrsnl'l'ate crystals dissolved in seven parts by weight of apure solution of hydrogen peroxid o l' the usual commercial strength.The webbing is steeped in the resultant solution and is then washed anddried. As in the ll iil;ll1)1iltll(f0 ofmakingilr candescent gasmantles; the webbing is thereupon looped together at the top forsuspension, the organic matter is burned out and the residual ash isincinerated in an intensified gas flame, as will be readily under--stood. The incinerated mantle may then be dipped in collodion and isready to be packed in boxes for the market.

The artificial ilk webbing whi h prefer to employ in producing themantle is that made either from denitraled intro-cellulose or from cuproammonia cellulose.

\Vhat I claim is:

1. The method of making im-andesceni gas mantles from artificial silkwebbing. which consists in subjecting the artificial silk Webbing,saturated with lighting salts to the action of ammonia and to the actionof peroxid of hydrogen substantially as described.

2. The method of making incandescent gas mantles from artificial silkwebbing, which consists in dipping the artificial silk webbing saturatedwith lighting salts, first in ammonia, and subsequently in a solutioncontaining peroxid of hydrogen: substantially as described.

3. The method of making incandescent gas mantles from artificial silkwebbing,

10 in ammonia,

which consists in dipping the artificial silk Webbing, saturated withlighting salts, first in ammonia, and subsequently in a solutioncontaining peroxid of hydrogen; substantially as described.

4. The method of making incandescent gas mantles from artificial silkwebbing, which consists in dippin the artificial silk webbing, saturatedwith lighting salts, first then rinsing it, and then (lip- ANGELOSIMONINI.

Witnesses:

RAYMOND ADAMS, J. BYRON Rooms, LEMUEL E. CoNovER.

